Details
The XTR Race M985 double-ring crank complements race-day performance with a narrow Q-factor, unparalleled power transfer and CloseStep chainring options to suit racers’ speed and style.
| Model Number |
FC-M985 |
| Series |
XTR |
| Crank Construction |
HOLLOWTECH II |
| Cassette Compatibility |
10-speed |
| Chain Compatibility |
HG-X 10-speed |
| 4-Arm Chainrings |
|
| Cahainring Sizes |
40-28T/ 42-30T/ 44-30T |
| Bolt Circle Diameter |
|
| Crank Arm Length |
170/175/180mm |
| Crank Arms |
|
| Outer Chainring |
Aluminum |
| Middle Chainring |
|
| Inner Chainring |
Aluminum |
| Chainring Bolts & Nuts |
|
| Bottom Bracket |
SM-BB90-A |
| E-type FD Compatible |
Yes |
| Chain Line |
48.8mm |
| BB Shell Width |
|
| Average Weight |
720g(42-30T、175mm) |
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